Mechanical pencil with a lead tank



FIG. 1 is a front elevation view of the mechanical pencil with a lead tank showing my new design.

FIG. 2 is a right side view of the design shown in FIG. 1. The left side view is the same as the right side view.

FIG. 3 is a rear view of the design shown in FIG. 1; and,

FIG. 4 is a bottom view of the design shown in FIG. 1.

The portions in dotted lines in the drawing figures are included for the purposes of illustrating environment and form no part of the claimed design. 

The ornamental design for a mechanical pencil with a lead tank, as shown and described. 